While it's ultimately up to you (and fairly trivial), I'd count them as contests since we're all competing to win a prize, it just so happens that the actual competition part is more against luck\chance than the other competitors. Also, I see community features as being stuff related to the website itself and more community-oriented things (where we come together rather than try to get ahead of the others). Again, it's not a big deal, just throwing my thoughts and there and wondering about yours.